摘要
页岩气水平井依靠大型水力分段压裂改造才能实现措施增产的目的,而固井水泥环的连续性、完整性和密封性是进行水力分段压裂的基础条件。通过建立页岩地层-水泥环-套管力学模型,开展内压作用下水泥环受力分析,对水泥环力学进行了参数敏感性分析,发现了水泥环受力敏感性因素,为页岩气水平井固井水泥浆体系的选择提供了新的方向。
Realizing gas production increase by taking measures in shale gas horizontal wells depends upon large-scale hydraulic staged fracturing modification .Continuity ,integrity and sealing of the cementing sheath are the basic foun‐dations for hydraulic staged fracturing .By setting up shale formation-cement sheath -casing mechanical model , this paper analyzed the cement sheath＇s load-carrying capability subjected to internal pressure and the parameter sensitivity of cement sheath mechanics and determined w hat had influenced the stress sensitivity of cement sheath , offering a new direction for selecting cement slurry system for shale gas horizontal wells .
出处
《江汉石油职工大学学报》
2015年第6期29-31,共3页
Journal of Jianghan Petroleum University of Staff and Workers
关键词
页岩气
压裂
固井
等效应力
Shale Gas
Fracturing
Well Cementation
Equivalent Stress
